Environmental Testing Lab

GEC (Gray’s) LLC is an advanced, full-service testing lab with over 30 years of experience. We are located in Tempe, Arizona — just southeast of Phoenix. Our firm performs a wide variety of environmental testing services for clients in the military, aerospace, automotive, consumer electronics, and medical and industries as well as fixture design/machining and equipment repair/installation. Gray’s expert technicians successfully complete client projects on time by providing high-quality testing services at a competitive price.

Testing Expertise

Our technicians have cumulative decades of experience performing a range of environmental testing methods. From vibration testing to explosive pyro shock analysis (for which we are the only testing facility in Arizona), Gray’s does it all!


Testing Applications

Testing Capabilities

Gray’s technicians perform a wide variety of dynamic, environmental, and mechanical testing services, including…

Fixture Design & Machining

The first step in any test is determining the best way to expose the unit to a specific environment…

Standards & Specifications

Since our founding, GEC (Gray’s) has excelled in performing test procedures in compliance with specifications and standards. Our history working with many different industries has given our technicians extensive experience with the standards relevant to each. We regularly perform testing services to MIL-STD, RTCA/DO, SAE, IEC, and ASTM standards, just to name a few. Click here to see the full range of our most frequently requested testing specifications.

What Sets Us Apart —
Gray's Dedication to Quality

Our advanced equipment and methods cover environmental testing including Dynamics, Climates, Thermal Vacuum, Ordnance and specific tests such as sand & dust, explosive atmosphere, steady state acceleration, hydraulic flow, and air flow. If our standard test processes do not match your requirements, we can quickly accommodate your specifications and needs. We are ISO 17025 accredited by the A2LA (No. 3661.01). We are an equal opportunity employer.


Contact us to discuss your requirements and specifications. Give Gray’s the opportunity to show you what our professional testing services can do for you!